Crowned CBN (Cubic Boron Nitride) grinding wheels provide a precise, clean, and cool-running alternative to bonded abrasive grit wheels. We worked with Woodturners Wonders to design a wheel specifically for hollow-grinding chisels, plane irons, and other woodworking tools. Joel has long been a proponent of hollow-grinding chisels and plane irons, because it makes honing so much easier. However, for many folks even high-quality bonded abrasive wheels are too dusty, difficult to maintain, or challenging to dress.

From the outset we knew we wanted a wheel that had all the advantages of a perfectly dressed bonded abrasive wheel AND the advantages of a precision CBN wheel. It would need to mount easily and safely onto the 1/2" arbor of a 6" Baldor Bench grinder. Even with such sky-high goals we have been surprised at how these came out - easy to use, and unlike some wider wheels these will run without the need to permanently remove the protective wheel covers, making for a safer machine.

We've got a CBN wheel mounted on the bench grinder in our workshop, and it's a breeze to use. The slight crown of the wheel gives a predicable first contact area for free hand grinding and gives loads of extra control to grind predictably and also prevent accidentally overheating the corners of your tool. Because the machined aluminum wheel is precisely round, there is zero tool chatter, and the grinder itself runs more quietly.

CBN is the second hardest material in the known universe, second only to diamond, but in powered grinding applications it is actually more durable than diamond because it doesn't react with iron - as the carbon molecules of a diamond will. That means you can grind to your heart's content on a CBN wheel - HSS, A2, D2, Powdered Metal, O1, W1, even carbide. It has another welcomed property that bonded abrasive wheels don't have: CBN and the aluminum wheel absorb heat instead of reflecting it back into the tool. This makes for very cool grinding, and with care you can even grind to a wire edge without dunking the tool in water (although we don't recommend it, cowboy).

If you've been looking for the next evolution in grinding for woodworkers, this is it.

Throw your grinder wheels away. Made in China or not the wheel I received is true and balanced. I'll never dress a wheel again! Fed ex dropped this off a few hours ago and I already sharpened a bunch of chisels and plane irons.

I own this product.

Worth every penny

By: Matthew (Jul, 2018)

Reason for ordering:
I have used a 46 grit white AO wheel for years and never had an issue, the only thing I didn't like was how the wheel lost it's flatness from free hand grinding and how I had to keep a water cup to dunk the tool into every few seconds. Last week I had to regrind a bucket full of mangled chisels, and needless to say it was messy and took a long time. As soon as I was done I went online and ordered a 60 grit CBN. It arrived (Internationally!!) in 3 days... !
Performance:
Simply put, this thing is a dream, and does everything a regular wheel can't do. Grinding a chisel takes literally 15 seconds, and the heat buildup is maybe a 10th of an AO wheel. I reground a old Stanley spokeshave blade all the way to a wire edge, and the tool never got too hot to touch. I don't really need water around with this thing, which is good because I just spilled the water cup everywhere...
Quality:
there is a comment here giving 1 star because it is made in china, and while I do understand the rant, it could not be more misplaced. The quality of the machining is fantastic, the arbor hole is perfect, and it runs so so smooth and true. This wheel has the &quot;woodturning wonders&quot; logo on it, and they seem to be some of the best CBN wheels you can get.

I own this product.

No vibration

By: Bruce Mack (Jan, 2018)

I got this about a year ago and installed it on my inexpensive DeWalt grinder. The 60 grit wheel gives a quick and controlled hollow to my plane irons and chisels. There is no excessive heating. There is no vibration, something I had not been able to control with aftermarket bushings and flanges, not needed with the CBN wheel. I am very happy with this purchase.

I own this product.

Mr.

By: Metod Alif (Dec, 2017)

My 6&quot; 60 grit CBN wheel was shipped within hours of my order. Thank you for your service.
Since I received it two days ago, I hollow ground 2 chisels and 5 irons. I am very pleased with the results. No need for water dipping. I wanted to see if I can get a wire edge without bluing. I did, easily. Toward the end I would pause for about 5 seconds between passes. The steel would get warm but far from hot.
The other wheel on the grinder is causing some vibration. If was much worse before I dressed it (both sides too). I am now considering to replace it with another, 80 grit CBN wheel.

I own this product.

Dr.

By: David Ragan (Oct, 2017)

First, it was shipped pronto like promised. Arrived on time, in good shape, and was perfectly balanced. Installed w some bushings I had. Ground one blade today-worked great; exactly as promoted. Great investment. Excellent service. Thanks guys.

I own this product.

By: Dennis (Jan, 2017)

Arrived in a few days ,packaged very well, and cuts like a dream Only problem i had was my fault. I did not measure my arbor size and it was less than 3/4&quot;. Lucky for me I have a metal lathe and quickly made a bushing. Advise to all is to check your arbor size.

I own this product.

Mr

By: Rick (Oct, 2016)

Many things are made in China and then imported into the country because of costs. Most can't afford a CBN wheel if it is locally made, how about, say, $159 apiece?
As long as the quality lasts, who cares. (By the way, check where you laptop or computer which you used to send your comment is made. China or Taiwan, most likely.)

I own this product.

Sweet

By: Brendan Gaffney (Aug, 2016)

This wheel is awesome. Super cool grinding (no need to quench while working), nice crown makes the contact point pretty reliable. Works well on my older 3600 RPM grinder. It remains to see its longevity, but it's showing no wear after putting a new hollow grind in just about every tool I own.